package com.xiong.springcloud.controller;

import com.xiong.springcloud.entities.Payment;
import com.xiong.springcloud.lb.LoadBalanced;
import com.xiong.springcloud.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.net.URI;
import java.util.List;

/**
 * @author wardseptember
 * @create 2020-03-27 19:57
 */
@RestController
@Slf4j
public class OrderController {
    private static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";
    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    LoadBalanced loadBalanced;

    @Autowired
    DiscoveryClient discoveryClient;


    @GetMapping("/consumer/payment/create")
    public Result<Payment> create(Payment payment) {
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create", payment, Result.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public Result<Payment> getPaymentById(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id, Result.class);
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB() {
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if (instances == null | instances.size() <= 0) {
            return null;
        }
        ServiceInstance serviceInstance = loadBalanced.instances(instances);
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri + "/payment/lb", String.class);
    }

    @GetMapping("/consumer/payment/zipkin")
    public Result<String> getPaymentById() {
        return restTemplate.getForObject("http://localhost:8001"+"/payment/zipkin", Result.class);
    }

}
